[lxc-users] Fedora container thinks it is not running

[Serge Hallyn]

Quoting Michael H. Warfield (mhw at WittsEnd.com):
> On Thu, 2014-05-15 at 22:04 +0700, Fajar A. Nugraha wrote:
> > On Thu, May 15, 2014 at 9:06 PM, Michael H. Warfield
> > <mhw at wittsend.com> wrote:
> >         On Thu, 2014-05-15 at 04:40 -0400, CDR wrote:
> >         
> >         > The container is started, because I am inside it via ssh
> >         > but I cannot use its console
> >         > lxc-console -n msterfe
> >         > msterfe is not running
> >         >
> >         > I am uploading the configuration as an attachment
> >         > The container was created from the template, LXC 1.0.3
> >         
> >         
> >         Ah, but that config obviously was not.  (And totally aside,
> >         why do you
> >         need 20 macvlan eth interfaces in a container???)  What
> >         happened to the
> >         config that the template created?  Was it thrown away and a
> >         new one
> >         created from whole cloth?
> >         
> >         Did you first try the container with the initial configuration
> >         file
> >         generated by the template?  That would be a good place to
> >         start and you
> >         might want to check /usr/share/lxc/config/fedora.common.conf.
> >          The
> >         initial configuration file generated by the template will
> >         "include" that
> >         common set of parameters but you can override those defaults.
> >         
> > 
> > 
> > The default default config file created by the template on Ubuntu
> > should work, as long as you remember to uncomment this line:
> > 
> > ####
> > # When using LXC with apparmor, uncomment the next line to run
> > unconfined:
> > 
> > #lxc.aa_profile = unconfined
> > ####
> > 
> > 
> > 
> > With that commented out, you'd get
> > ####
> > 
> > <30>systemd[1]: Starting Root Slice.
> > 
> > <27>systemd[1]: Caught <SEGV>, dumped core as pid 12.
> > <30>systemd[1]: Freezing execution.
> > ####
> > 
> > 
> > With the unconfied apparmor profile, it works as expected
> > 
> > 
> > ####
> > # lxc-ls -f f20
> > NAME  STATE    IPV4        IPV6  AUTOSTART  
> > ------------------------------------------
> > f20   RUNNING  10.0.3.205  -     NO 
> > ####
> 
> Nice catch!  I wonder if there is some way I can automate that in the

What exactly is systemd doing at that spot?  (I suppose I shoudl go look
at git, but figure maybe you know offhand)  Perhaps it's something we can
add unconditionally to the apparmor profile.

> template.  I would hate to say "if on Ubuntu" but maybe "with apparmor".
> Maybe that should be the default in that config and just ignored where
> apparmor isn't used.
> 
> > lxc-stop doesn't work without "-k". I remember reading about this on
> > the list some time ago, might be useful to integrate the workaround in
> > the template.
> > ####
> > [root at f20 ~]# Received SIGPWR.
> > ####
> 
> I already integrated some thing in there.  Should no longer be a problem
> though that update may not have made it into a release yet.
> 
> > Using 20 veth interfaces in the container works, by adding blocks like
> > this in the config file (and adding appropriate configuration inside
> > the container). Each veth needs is its own unique hwaddr
> > ###
> > lxc.network.type = veth
> > lxc.network.flags = up
> > lxc.network.link = lxcbr0
> > 
> > lxc.network.hwaddr = fe:8b:ee:bc:52:c0
> > ###
> > 
> > 
> > 
> > 
> > 
> > ###
> > # lxc-ls -f f20
> > NAME  STATE    IPV4
> > 
> > 
> >                                              IPV6  AUTOSTART  
> > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> > f20   RUNNING  10.0.3.205, 10.0.3.207, 10.0.3.208, 10.0.3.209,
> > 10.0.3.210, 10.0.3.217, 10.0.3.218, 10.0.3.219, 10.0.3.220,
> > 10.0.3.221, 10.0.3.222, 10.0.3.223, 10.0.3.224, 10.0.3.225,
> > 10.0.3.226, 10.0.3.233, 10.0.3.234, 10.0.3.235, 10.0.3.236,
> > 10.0.3.237  -     NO         
> > ###
> > 
> > 
> > 
> > -- 
> > 
> > Fajar
> 
> Regards,
> Mike
> -- 
> Michael H. Warfield (AI4NB) | (770) 978-7061 |  mhw at WittsEnd.com
>    /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
>    NIC whois: MHW9          | An optimist believes we live in the best of all
>  PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!
> 



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